A quick learner from Kailua Kona Hawaii says:
February 15, 2013
See attached pictures for what I need. Spacing from left to right is 1.1875,0.9375 and 1.375 inches. Approximate height from left to right is 1/4,3/8, 1/2 and 1 inch exterior flange.
Tom from SWISCO responded:
February 20, 2013
Thanks for posting. Please take a look at our 80-105 Sliding Glass Door Track. Does that look like a possible replacement? Let me know!